Questions from Statistics

Q: Find the critical value(s) and rejection region(s

Find the critical value(s) and rejection region(s) for the type of chi-square test with sample size n and level of significance α. Right-tailed test, n = 30, α = 0.01

Q: A random sample of 40 ostrich eggs has a mean incubation period

A random sample of 40 ostrich eggs has a mean incubation period of 42 days. Assume the population standard deviation is 1.6 days. a. Construct a 95% confidence interval for the population mean incuba...

Q: Find the critical value(s) and rejection region(s

Find the critical value(s) and rejection region(s) for the type of chi-square test with sample size n and level of significance α. Two-tailed test, n = 31, α = 0.05

Q: State whether each standardized test statistic x2 allows you to reject the

State whether each standardized test statistic x2 allows you to reject the null hypothesis. Explain. a. x2 = 2.091 14. b. x2 = 0 c. x2 = 1.086 d. x2 = 6.3471

Q: State whether each standardized test statistic x2 allows you to reject the

State whether each standardized test statistic x2 allows you to reject the null hypothesis. Explain. a. x2 = 22.302 b. x2 = 23.309 c. x2 = 8.457 d. x2 = 8.577

Q: Test the claim about the population variance σ2 or standard deviation σ

Test the claim about the population variance σ2 or standard deviation σ at the level of significance α. Assume the population is normally distributed. Claim: σ2 = 0.52; α = 0.05. Sample statistics: s2...

Q: Test the claim about the population variance σ2 or standard deviation σ

Test the claim about the population variance σ2 or standard deviation σ at the level of significance α. Assume the population is normally distributed. Claim: σ2 ≥ 8.5; α = 0.05. Sample statistics: s2...

Q: Test the claim about the population variance σ2 or standard deviation σ

Test the claim about the population variance σ2 or standard deviation σ at the level of significance α. Assume the population is normally distributed. Claim: σ2 ≤ 17.6; α = 0.01. Sample statistics: s2...

Q: Test the claim about the population variance σ2 or standard deviation σ

Test the claim about the population variance σ2 or standard deviation σ at the level of significance α. Assume the population is normally distributed. Claim: σ2 > 19; α = 0.1. Sample statistics: s2 =...

Q: Test the claim about the population variance σ2 or standard deviation σ

Test the claim about the population variance σ2 or standard deviation σ at the level of significance α. Assume the population is normally distributed. Claim: σ2 ≠ 32.8; α = 0.1. Sample statistics: s2...